Flexible stay-bolt.



j UNrrEn STATES PATENT oEEIoE.

FLEXIBLE STAY-BOLT.

Specification of Letters Patent.

Patented June 1 1, 1907.

i Application led October 8,1906. Serial No. 337.878.

To all whom it may concern.-

Beit known that I, THOMAS H. MOONEY, a

l citizen of the United States, and a resident of Houston, Texas,have'invented certain new and usefull Improvements in Flexible Stay-Bolts, of which the following is a specification containing a full,clear, and exact description, reference being had to the accompanyindrawings, forming a part hereof.

y'invention relates to a flexible stay bolt, such as is particularlyadapted for use in steam boilers, and which stay bolt is con- .structedwith a iiexible joint at both ends, or lat the oints Where saidboltconnects with ythe boi er sheets.

To the above purposes, my invention consists in certain nove features ofconstruction and arrangement of parts, which will be hereinafter morefull set forth, ointed out in the claims, and il ustrated in t eaccompanyin drawings, in which:-', j

igure 1 1s asection through portions of the boiler sheets, and showingmy improved stay bolt connecting said sheets; Fi 2 is an elevation'ofthe cap that is locate on a socket at one end of theb'olt in order toprovide a steam tight joint; Fig. 8 is an elevation of the end of thestay bolt which is located in the socket, and with the cap removedtherefrom. 7 Y,

Referring by numerals to the accompanying drawings, 1 desi nates thebody of my improve staybolt,w 'chis ofthe usualform, with one endexteriorly screw threaded, as indicated'b 2, and the o posite end beingprovdedwit an inte al emispherical head 3.v

This head fits snug y within a cup 4, which is provided with an integralscrew threaded shank 45, and whichis screw seated in, one of the boilersheets 6. This shank is provided with. an angular projection 5 to beenaged by a'wrench for screwing said shank into the sheet, and whichprojection is subsequently rremoved in an suitable manner.

The arrangement of t e head 3 in the cup 4y provides for .a universaljoint between the clt and said cup.

Formed in the op osite boiler sheet 7, in direct aline'ment wit i the ou4, is a screw 5d threaded aperturey 8, of su cient size to l allow theinsertion of the cup 4, and seated in laid aperture is a socket 9, theaperture through which curves gradually inward from the outer face ofsaid socket. The screw threaded end of the bolt l passes through thissocket 9, and receives a nut 10, the exterior surface of which is curvedto fit the inner surface of the socket 9, and which nut is provided withan integral head 11, having angular faces which are ada ted to r'eceivea wrench, or similar too used for screwing the nut onto the end of thebolt 1.

A slot 2El is formed in the screw threaded end of the bolt 1 in which asuitable tool is located to hold said bolt when the nut 10 is beingseated thereon.

12 designates a ca screw threaded, and W ch is seated upon the extendedend of the socket 9, thus inclosing the nut 10, and forming a perfectlysteam tight joint at this end of the sta bolt.

The arrangement just descri ed provides for a universal 'oint at theouter end of the staybolt, and t us said stay bolt is provided at eachend with a flexible joint, whereby any movement of one boiler sheetrelative the other is permitted, and at the same time said sheets beingvery rigidly connected.

A stay bolt of my improved construction is simple, stron and durable,easily placed in position, an yields readily to the movement of eithersheet.

The combination with a pair of boiler sheets, of a cu fixed to one ofthe sheets, a sta bolt, a sp erical head integral with on'e en of thestay bolt which head is seated in the cup, a socket seated in theopposite sheet in which socket is formed a semicircu'lar seat,

a nut adjustabl seated on the end of the stay bolt o osite th and w ichnut has a curved surface adapted to iit the semicircular seat in thesocket, and a ca detachabl secured to the socket and vlic incloses t enut and end of the stay In testimony whereof, I have signed my name tothis specification, inpresence of two subscribing witnesses.

j THOMAS -E. MooNEY." Witnesses JOHN W. HAZARD, M. S'rUBENRANoH.'

which is interi orly Y eend provided with, ahead

